QEMU is a good way to experiment with the "Classic" Mac OS. The Virtio devices make it even more fun to use!
The Retro68 compilers are used. (Make sure that your checkout is from 2023-12-16 or later -- there was an important bugfix.)
Update your $PATH to include the Retro68 toolchain (powerpc-apple-macos-gcc etc).
Then:
git clone https://github.com/elliotnunn/classicvirtio.git
cd classicvirtio
make
-device loader,addr=0x4000000,file=/PATH/TO/classicvirtio/build/ndrv/ndrvloader
-prom-env "boot-command=init-program go"
-device nubus-virtio-mmio,romfile=/PATH/TO/classicvirtio/build/classic/declrom
Lets the mouse cursor move seamlessly in and out of the virtual machine window
- bug: scroll wheel support unreliable, and on Mac OS 9 only
PowerPC: works out of the box
-device virtio-tablet-pci
68k: requires virtio-mmio patch to QEMU
-device virtio-tablet-device
Presents a folder on the host computer as a bootable hard drive on the guest computer
- resource forks in *.rdump and type/creator codes in *.idump
- append
_1to mount_tag to use the native fork format on a macOS host (needs patches) - bug: some filesystem operations (e.g. CatMove) unimplemented
- bug: booting qemu-system-m68k requires hacks to PRAM
PowerPC: works out of the box
-device virtio-9p-pci,fsdev=UNIQUENAME,mount_tag="Macintosh HD"
-fsdev local,id=UNIQUENAME,security_model=none,path=/PATH/TO/HOST/FOLDER
# Use this option to boot from the device:
-device loader,addr=0x4400000,file="/PATH/TO/HOST/FOLDER/System Folder/Mac OS ROM"
68k: requires virtio-mmio patch to QEMU
-device virtio-9p-device,fsdev=UNIQUENAME,mount_tag="Macintosh HD"
-fsdev local,id=UNIQUENAME,security_model=none,path=/PATH/TO/HOST/FOLDER
Displays video at any resolution up to 4K
- bug: client-side gamma correction
- bug: misses direct (non-QuickDraw) framebuffer access when interrupts are off
PowerPC: patches required to QEMU and OpenBIOS
-device virtio-vga
68k: not working yet
